Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics

HAN Dong; ZHANG Hai-yong; HUANG Hai-ning; LI Qi-hu

doi:10.3969/j.iss.0372-2012-2014.03.003

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Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics

更新时间：2025-07-16

- Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics
- Acta Electronica Sinica Vol. 42, Issue 3, Pages: 432-438(2014)
- 作者机构：
  
  1. 中国科学院声学研究所,北京,100190
  2. 海军大连舰艇学院通信系,辽宁,大连,116018
  3. 中国科学院声学研究所,北京,100190
  4. 海军大连舰艇学院通信系,辽宁,大连,116018
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China (No.60532040, No.11374001);Research Development Fund of PLA Dalian Naval Academy (No.2009032)
- DOI：10.3969/j.iss.0372-2012-2014.03.003
  CLC： TP911.9
- Published：2014
- 稿件说明：
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HAN Dong, ZHANG Hai-yong, HUANG Hai-ning, et al. Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics[J]. Acta Electronica Sinica, 2014, 42(3): 432-438.
DOI：

HAN Dong, ZHANG Hai-yong, HUANG Hai-ning, et al. Towed Line Array Sonar Platform Radiated Noise Spatial Matrix Filter Based on Far-Field and Near-Field Sound Propagation Characteristics[J]. Acta Electronica Sinica, 2014, 42(3): 432-438. DOI： 10.3969/j.iss.0372-2012-2014.03.003.

摘要

针对拖线阵声纳平台噪声构成近场强干扰影响声纳弱目标探测的问题，利用近场平台噪声的多途传播特性及远场目标信号的平面波传播特性，将匹配场定位技术和平面波目标方位估计技术结合，利用平台噪声到达接收阵的拷贝向量以及平面波方向向量共同设计具有强干扰抑制功能的空域矩阵滤波器，实现了近场平台噪声抑制.设计两种最优化问题，获得不同的噪声抑制效果，给出它们的最优解，验证了解的正确性，找出解之间的关联.解释了平台辐射噪声在阵列端首方位附近构成强干扰的原因，同时解释了空域矩阵滤波后存在探测盲区的原因.由仿真可知，空域矩阵滤波处理可获得更小的探测盲区，同时获得盲区外更高的探测能力.

Abstract

The detection of far-field weak target is influenced by the strong near-field platform radiated noise interference in the towed line array sonar.The near-field sound is with multiple channel propagation

and the far-field sound is with plane wave propagation.By these propagation characteristics

the matched field processing technology and the direction of arrival estimation technology are combined together.The spatial matrix filters are designed by the near-filed platform noise copy vector and the far-field plane wave bearing vector.Two optimization programs are built to achieve different platform noise suppression effects.The optimal solutions are deduced directly and their relationships are established.In the bearing course

the strong interferences exist without filtering

and the blind areas exist after filtering by the spatial matrix filter.The reason is that there are relativities between the platform copy vector and the plane wave bearing vector.Simulations indicate that it can achieve less blind area and higher detection capability with spatial matrix filter processing.

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